Charge Multiple Xbox One / One S / One X Controllers with Fosmon Xbox One Controller Charger Fosmon's Quad Pro Charging Station for Xbox One Controllers replaces your Xbox One controllers' battery housing, turning them into rechargeable battery packs. Simply plug the base into an open USB slot on the Xbox One, or into a USB charger. Charge 4 Batteries At a Time This Xbox One controller charger can charge up to 4 batteries at a time. 2 batteries can be docked into the charging slots while 2 controllers equipped with the batteries can be placed on top to charge. Remove the need for multiple cables and docks and charge up to 4 batteries in one easy to use station. Longer Lasting Rechargeable Batteries Fosmon's Xbox One controller charging station provides up to 30-33 hours of standby time per charge with the 1000mAh NiMH battery packs. They are built to last, with a lifespan of over 1,000 charge cycles. Quick and Efficient Charging When not gaming, simply put the equipped Xbox One Controller on the charging station or place the rechargeable battery into the charging slot and it will start charging automatically. This makes it a quick and easy process to charge each controller. Green LED Indicator The helpful green LED indicator will blink when a controller is being charged and stay glowing to let the user know that charging is complete. Limited Lifetime Warranty This product comes with a limited lifetime warranty. Please refer to Fosmon's website for more information. Specifications Input: USB Micro-B Output: USB Type-A Charging Time: 4-5 Hours Charge Cycles: >1000 Battery Information: 1000mAh NiMh Rechargeable Battery Packs Battery Life: Up to 30-33 hours of play time Battery Safety: SGS certified UL 2054 and UL 60950-1 Standards Quad Pro Charging Dock Design: Patent Pending Package Includes 1 x Quad Pro Charging Station 4 x 1000mAh NiMH Rechargeable Battery Packs 1 x 4ft (1.22 meter) Micro-USB Charging Cable (power adapter not included)